multicomp.reverse: Force all comparisons in a "multicomp" object to have the same sign.
Description
Force all comparisons in a "multicomp" object
to have the same sign. If the contrast "A-B" has a negative estimate,
reverse it show the contrast "B-A" with a positive estimate.
Usage
multicomp.reverse(y, estimate.sign = 1, ...)
Arguments
Value
The result is a "multicomp" object containing the same contrasts
as the argument but with the sign of the contrasts changed as needed.
References
Heiberger, Richard M. and Holland, Burt (2004b).
Statistical Analysis and Data Display: An Intermediate Course
with Examples in S-Plus, R, and SAS.
Springer Texts in Statistics. Springer.
ISBN 0-387-40270-5.
Heiberger, R.~M. and Holland, B. (2006).
"Mean--mean multiple comparison displays for families of linear contrasts."
Journal of Computational and Graphical Statistics, 15:937--955.